{"title":"Growth Parameters of the Freshwater Pearl Mussel Margaritifera margaritifera (Bivalvia, Margaritiferidae), Vuokinjoki River Population (Karelia)","authors":"A. Zotin, S. Murzina, K. A. Filippova, E. Ieshko","doi":"10.4002/040.063.0107","DOIUrl":null,"url":null,"abstract":"ABSTRACT Individual linear growth rates were studied in the freshwater pearl mussel Margaritifera margaritifera from the Vuokinjoki River. Growth deceleration coefficients were shown to vary widely and differ significantly among individuals. The average value of the growth deceleration coefficient for the population is 0.069. The growth of mussels in the Vuokinjoki River is accompanied by three regular biorhythms. These biorhythm periods were roughly constant both through an individual's ontogeny and among mussels. Their average periods were 13.3, 6.4, and 4.0 years. The growth deceleration coefficient a depends on the age of the mussels. We discuss the possibility that the hydrological regime disturbance caused by the Kem hydropower plants' cascade construction could influence the growth rate.","PeriodicalId":49895,"journal":{"name":"Malacologia","volume":"63 1","pages":"67 - 75"},"PeriodicalIF":0.7000,"publicationDate":"2020-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Malacologia","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.4002/040.063.0107","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ZOOLOGY","Score":null,"Total":0}
引用次数: 1
Abstract
ABSTRACT Individual linear growth rates were studied in the freshwater pearl mussel Margaritifera margaritifera from the Vuokinjoki River. Growth deceleration coefficients were shown to vary widely and differ significantly among individuals. The average value of the growth deceleration coefficient for the population is 0.069. The growth of mussels in the Vuokinjoki River is accompanied by three regular biorhythms. These biorhythm periods were roughly constant both through an individual's ontogeny and among mussels. Their average periods were 13.3, 6.4, and 4.0 years. The growth deceleration coefficient a depends on the age of the mussels. We discuss the possibility that the hydrological regime disturbance caused by the Kem hydropower plants' cascade construction could influence the growth rate.
期刊介绍：
Malacologia publishes papers on all groups of the Mollusca. Malacologia specializes in publishing long papers and monographic treatments. Complete data are especially appreciated. Papers must be of interest to an international readership. Papers in systematics, ecology, population ecology, genetics, molecular genetics, evolution and phylogenetic treatments are especially welcomed. Also welcomed are letters to the editor involving papers published or issues of import to science of the day.
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